JP2009285338A - Biological information acquisition apparatus, biometric authentication apparatus, and electronic device - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a biological information acquisition apparatus picking up a desired image in a narrow space. <P>SOLUTION: The biological information acquisition apparatus (biological information acquisition part 2) is provided with an imaging part 200 having at least one pixel column and a mounting base 801 where a subject is to be mounted. The mounting base 801 is movable in a direction crossing the arrangement direction of a plurality of pixels PXes included in the pixel column on the pixel column. Further, a light source 100 for irradiating the subject with light is provided. The mounting base 801 is composed of a member having transmissibility to the light with which the subject is irradiated by the light source 100. The mounting base 801 is moved along a guide member 802. <P>COPYRIGHT: (C)2010,JPO&INPIT

Description

  The present invention relates to a biometric information acquisition apparatus, a biometric authentication apparatus, and an electronic device.

  In recent years, with the enhancement of protection of information security, technological development relating to biometric authentication has been advanced. Biometric authentication is a technology that compares biometric information acquired from an individual with biometric information registered in advance and authenticates whether or not the person is the person. The biometric information includes information using a human iris pattern, information using a human fingerprint pattern or finger vein pattern, and the like. In particular, biometric authentication using a human finger vein pattern is difficult to forge a pattern image, and high security can be ensured.

  When acquiring this finger vein pattern, it is necessary to capture an image in a desired range, but if an area sensor in which pixels are two-dimensionally arranged to correspond to the desired range is used, the entire biological information acquisition device As the price increases.

In view of this, the biological information acquisition apparatus of Patent Document 1 moves a slide member including a line sensor in a direction intersecting the line sensor by a driving device, and sequentially captures partial images of the subject.
JP 2007-257307 A

  The biometric information acquisition apparatus of Patent Literature 1 needs to secure a space for moving a slide member including a line sensor below a subject, a space for housing a driving device, and the like.

  An object of this invention is to provide the biometric information acquisition apparatus, biometric authentication apparatus, and electronic device which can image a desired image in a narrow space.

  A biological information acquisition apparatus according to the present invention is a biological information acquisition apparatus that images a subject to acquire biological information, and includes an imaging unit having one or more pixel columns, and a mounting on which the subject is placed. A mounting table, and the mounting table is configured to be movable in a direction intersecting an arrangement direction of a plurality of pixels included in the pixel column on the pixel column. As a result, a desired image can be taken at a low cost in a narrow space and with a simple configuration in which the drive device is omitted.

  It is preferable that the light source that irradiates the subject with light is provided, and the mounting table is made of a member that is transparent to the light that irradiates the subject, and moves along the guide member.

  It is preferable to provide return means for returning the mounting table to the original position. This eliminates the need for the user to manually return the mounting table to the original position, thereby improving the user-friendliness. Further, since the mounting table can be returned to the original position with high accuracy, the accuracy of the image to be captured can be improved.

  Furthermore, it is preferable to include detection means for detecting the amount of movement of the mounting table with respect to the above-described pixel row. Thereby, one desired composite image can be formed with high accuracy from the signal obtained by the imaging unit.

  As the detection means described above, it is preferable that a regular pattern is formed on the pixel column for detecting the amount of movement of the mounting table with respect to the pixel column.

  It is preferable to include a control unit that controls the light amount of the light source. Thereby, it is possible to cope with a change in the amount of light emitted to the finger due to a change in external light, a change in the moving speed of the mounting table, and the like.

  The biometric authentication apparatus according to the present invention performs authentication by comparing a biometric information acquisition unit that images a subject and acquires biometric information, biometric information acquired by the biometric information acquisition unit, and biometric information registered in advance. A biometric authentication device comprising: an authentication unit that includes: an imaging unit having one or more pixel columns; and a mounting table on which the subject is mounted; The mounting table is configured to be movable in a direction intersecting the arrangement direction of the plurality of pixels included in the pixel column on the pixel column. As a result, a desired image can be taken at a low cost in a narrow space and with a simple configuration in which the drive device is omitted.

  An electronic apparatus according to the present invention includes the biometric authentication device described above. As a result, a desired image can be taken at a low cost in a narrow space and with a simple configuration in which the drive device is omitted.

  According to the present invention, a desired image can be taken in a narrow space.

  Hereinafter, embodiments of the present invention will be described with reference to the drawings. Each embodiment is simplified for convenience of explanation. Since the drawings are simple, the technical scope of the present invention should not be interpreted narrowly based on the drawings. The drawings are only for explaining the technical matters, and do not reflect the exact sizes or the like of the elements shown in the drawings. The same elements are denoted by the same reference numerals, and redundant description is omitted. Words indicating directions such as up, down, left, and right are used on the assumption that the drawing is viewed from the front.

<Embodiment 1>
A biometric information acquisition apparatus, a biometric authentication apparatus, and an electronic device according to a first embodiment of the present invention will be described with reference to FIGS.

  As shown in FIG. 1, the biometric authentication device 1 includes a biometric information acquisition unit (biological information acquisition device) 2 and a biometric information acquisition unit 2 that acquire biometric information such as a fingerprint pattern and a finger vein pattern from an image obtained by imaging a subject. Is provided with an authentication unit 3 that compares and authenticates the biometric information acquired by the biometric information registered in advance. The biometric authentication device 1 is suitably mounted on a mobile phone, a PC (Personal Computer), an ATM (Automated Teller Machine), or the like, which is a kind of electronic equipment.

  The biometric information acquisition unit 2 of this embodiment includes a light source 100, an imaging unit 200, a control unit 300, an analog / digital (A / D) converter 400, a processing unit 500, a line memory 600, and a frame memory 700.

  The biometric information acquisition unit 2 is characterized by imaging a placed subject (in this embodiment, a finger) so that an image for a desired line can be captured, as shown in FIGS. A moving means 800 for moving (sliding) on the line sensor 201 included in the unit 200 in a direction intersecting the arrangement direction of the plurality of pixels included in the pixel column of the line sensor 201.

The moving unit 800 includes a mounting table 801 and a guide member 802.
As shown in FIG. 3, the mounting table 801 is made of a flat plate member that is transparent to light (hereinafter simply referred to as inspection light) that the light source 100 irradiates the finger. The mounting table 801 includes a mounting unit 803 having a size that can mount at least a predetermined portion of a finger to be imaged. As shown in FIGS. 4 and 5, two L-shaped members 804 are disposed on the lower surface of the mounting portion 803 so that the horizontal pieces 804 a are outwardly parallel to the direction of the finger and on both sides of the finger imaging region. It is provided so as to protrude. On the upper surface of the mounting portion 803, an inverted U-shaped finger guide member 805 simulating the outer peripheral edge of the finger so that the finger is placed at a predetermined position in the extending direction of the L-shaped member. Is provided. As a result, the user always places his / her finger at a predetermined position, and an accurate image can be taken.

  The guide member 802 may have a horizontal piece that can be fitted into the groove portion 804b of the L-shaped member 804 of the mounting portion 803, such as an L-shaped member or a U-shaped member. The length of the guide member 802 is set longer than the length of the predetermined part of the finger placed on the placement unit 803. Such a guide member 802 is fixed to a housing of a mobile phone, for example, in a form in which two horizontal pieces are fitted in the groove portion 804b of the L-shaped member 804 of the placement portion 803 in parallel.

  A storage member 900 is disposed in a direction intersecting the guide member 802 in a lower portion (but may be an upper portion) between the two guide members 802. Both ends of the storage member 900 are fixed to the guide member 802.

  As shown in FIG. 6A, the storage member 900 stores a plurality of light sources 100 and the imaging unit 200 at least in the transverse region of the finger placed on the placement unit 803. That is, the guide member 802 defines the moving direction of the mounting table 801, and the line sensor 201 is arranged in a direction intersecting the moving direction of the mounting table 801 below the plane in which the mounting table 801 moves. .

  In the biometric authentication device 1, the biometric information acquisition unit (biometric information acquisition device) 2, and the electronic device having such a configuration, the user places his / her finger on a substantially flat mounting table 801 disposed on the light source 100 and the line sensor 201. When the mounting table 801 is slid in a direction crossing the line sensor 201 (downward in the drawing in this embodiment) by human power, a predetermined part of the finger placed on the mounting table 801 passes over the line sensor 201. . At that time, the imaging unit 200 sequentially captures images within the slide area of the mounting table 801. Therefore, unlike the conventional biometric information acquisition device and biometric authentication device, there is no need to secure a space for moving the slide member including the line sensor, a space for housing the drive device, and the like. Also, no drive device is required to move the slide member. Therefore, it is possible to capture a desired image at a low cost using a line sensor with a simple configuration in a narrow space and without a driving device. In particular, the space below the mounting table 801 can be used freely, and the electronic device on which the biometric authentication device 1 is mounted can be downsized.

  The biological information acquisition unit 2 having the above-described features uses a light source 100 including a semiconductor light emitting element (LED (Light Emitting Diode)), a semiconductor laser element (LD (Laser Diode)), or the like, and a placement unit 803. The inspection light is irradiated to the finger placed on the. As inspection light, visible light (wavelength: about 360 to 800 nm) or near infrared light (wavelength: about 0.7 to 2.5 μm) is irradiated. Note that the inspection light may be directly applied to the finger using an LED or the like, or the inspection light may be applied indirectly using a light guide or the like. Further, when acquiring a fingerprint pattern as biometric information, the light source may be omitted.

  Reflected light or transmitted light from the finger is incident on the imaging unit 200 via the placement unit 803. The imaging unit 200 is an optical component in which an optical function unit (not shown) is stacked on the line sensor 201. In the present embodiment, as shown in FIG. 6B, the line sensor 201 in which a plurality of pixels PX are arranged in a row is used, but a sensor having one or more pixel rows may be used.

  The imaging unit 200 passes reflected or transmitted light from a finger incident from above through a band-pass filter (optical function unit) that blocks disturbance light, and then the micro lens array (optical function unit) causes the line sensor 201 to The light is condensed on each pixel PX. The imaging unit 200 performs photoelectric conversion in each pixel PX, reads a signal from each pixel PX, and supplies the signal to the A / D converter 400.

  Incidentally, the light source 100 and the imaging unit 200 are controlled by a control unit 300 that controls the entire biological information acquisition unit 2. That is, the control unit 300 performs control so that a signal obtained by imaging is read at a predetermined readout timing, or instructs the light source 100 and the imaging unit 200 to start or stop the operation.

  The A / D converter 400 A / D converts the supplied signal from each pixel PX and supplies the signal to the processing unit 500. The processing unit 500 supplies signals from the supplied pixels PX to the line memory 600 one after another. The line memory 600 accumulates signals from the supplied pixels PX, and when a signal (line signal) for one column of pixels is accumulated, this line signal is sent to the frame memory 700 via the processing unit 500. To supply. When the frame memory 700 stores the supplied line signals and stores a desired number of line signals (forming a desired image), the frame memory 700 supplies the desired number of line signals to the processing unit 500. The processing unit 500 obtains biological information by performing binarization processing or the like on the desired number of supplied line signals.

  In this way, when a signal indicating the biometric information acquired by the biometric information acquisition unit 2 is supplied from the processing unit 500 to the authentication unit 3, biometric authentication can be performed. The authentication unit 3 performs authentication by comparing the acquired biometric information with biometric information registered in advance.

  In addition, it is preferable that the biometric information acquisition part 2 is provided with the reset means 1000 which returns the mounting base 801 to an original position like the example of illustration. For example, one end of an elastic body 1001 such as a spring arranged in parallel with the guide member 802 is connected to a connecting piece 1002 provided on the lower surface of the mounting portion 803, and the other end is, for example, a housing of a mobile phone. It is connected to a connecting piece 1003 provided on the body. It is unnecessary for the user to manually return the mounting table 801 to the original position, that is, the starting point position of the imaging region, and user convenience can be improved. In addition, since the mounting table 801 can be returned to the original position with high accuracy, the accuracy of the image to be captured can be improved.

  In addition, as shown in FIG. 7, it is preferable that a non-slip member 1100 made of resin or the like is provided at the lower end portion of the finger guide member 805 on the upper surface of the placement portion 803. Note that the anti-slip member 1100 may be disposed in a portion that does not interfere with the imaging region. Further, the anti-slip member 1100 is not limited to a resin or the like, and may be any member that can increase the resistance with a finger.

<Embodiment 2>
Embodiment 2 of the biometric information acquisition apparatus, biometric authentication apparatus, and electronic apparatus according to the present invention will be described with reference to FIGS. In addition, description of the part which overlaps with the said Embodiment 1 is abbreviate | omitted, and a different part is demonstrated in detail.

  As shown in FIGS. 8 and 9, the biological information acquisition unit 12 of the present embodiment has a regular pattern 1200 formed on the line sensor 201 for detecting the amount of movement of the mounting table 801 relative to the line sensor 201. Yes. Specifically, the line sensor 201 is arranged such that the pixel row protrudes from the finger imaging region. The pattern 1200 is provided on the lower surface of the mounting portion 803 in a direction intersecting the line sensor 201 so that the pattern 1200 passes over the plurality of protruding pixels.

  The pattern 1200 has an address code 1200a representing a numerical value such as a barcode illustrated in FIG. 10A so that position information (address) can be given to an image captured by the line sensor 201. This pattern 1200 is provided in advance on the lower surface of the mounting portion 803 so that a signal obtained by imaging each address code 1200a at a predetermined readout timing is read out. When the pattern 1200 is moved via the placement unit 803, the imaging unit 200 reads a signal obtained by imaging the address code 1200a at a predetermined reading timing. At this time, if the readout timing is shifted, the readout timing is adjusted so that a signal obtained by imaging the address code 1200a is read out. Thus, as shown in FIG. 11, when the mounting unit 803 is moved and a signal obtained by imaging by the imaging unit 200 is read at a predetermined readout timing, the signal obtained by imaging the address code 1200a is always The line signal obtained by imaging the finger can be read in association with the line signal.

  As described above, the signal obtained by imaging the address code 1200a by the imaging unit 200 and the line signal obtained by imaging the finger are read in association with each other. As shown in FIG. Before being supplied from the converter 400 to the processing unit 500, the position information extraction unit 1300 extracts only a signal obtained by imaging the address code 1200a. In the extraction method, it is determined where the supplied signal is picked up by the pixel arranged, and for example, if the signal is picked up by the first few pixels, the address code 1200a is picked up. Recognize and extract the obtained signal.

  The position information extraction unit 1300 supplies a signal obtained by imaging the extracted address code 1200 a to the address detection unit 1400. The address detection unit 1400 detects an address based on a signal obtained by imaging the supplied address code 1200 a and supplies a signal indicating this address to the processing unit 500 via the control unit 300.

  On the other hand, a line signal obtained by imaging a finger is accumulated in the line memory 600 via the processing unit 500. The line memory 600 supplies a line signal obtained by imaging the accumulated finger to the processing unit 500.

  The processing unit 500 associates a signal indicating the supplied address with a line signal obtained by imaging a finger and supplies the associated signal to the frame memory 700. As the mounting table 801 moves, a signal indicating an address supplied from the processing unit 500 and a line signal obtained by imaging a finger are associated with each other and supplied to the frame memory 700 one after another. The frame memory 700 is set to arrange line signals obtained by imaging a finger based on a signal indicating an address in advance. As a result, the frame memory 700 arranges line signals obtained by imaging a finger based on a signal indicating the supplied address, and forms a desired composite image. Therefore, one desired composite image can be formed with high accuracy from the line signal obtained by the line sensor 201.

  In the present embodiment, as shown in FIG. 11, the imaging unit 200 reads a signal obtained by imaging the address code 1200a first. However, the imaging unit 200 may read a line signal obtained by first imaging a finger and then read a signal obtained by imaging the address code 1200a. Reading of the signal is defined by the control of the vertical scanning circuit and the horizontal scanning circuit of the imaging unit 200.

  Note that, as shown in FIG. 10B, the pattern 1200 has a light reflecting portion 1200b of a wedge-shaped (triangular) white portion and a light absorption of a black region (shaded portion in the illustrated example) other than the light reflecting portion. It may be a form that is separately applied to the portion 1200c. In this case, when the address detection unit 1400 performs binarization processing on the signal obtained by the line sensor 201 imaging the light reflection unit 1200b, a signal pulse having a certain length is obtained. The address detection unit 1400 counts how many pixels of the line sensor 201 correspond to the length of the signal pulse, and detects the address of the line signal obtained by imaging the finger.

  Further, as shown in FIG. 10C, the pattern 1200 includes a light reflecting portion 1200d in which rectangular white spots having a height substantially equal to the length of one side of the pixel of the line sensor 201 are arranged on the N line, You may paint separately with the light absorption part 1200e of black areas (shaded part in the example of illustration) other than this light reflection part. In this case, when the address detection unit 1400 binarizes the signal obtained by imaging the white point by the line sensor 201, a signal pulse is obtained so as to correspond to the arrangement of the white point. The address detection unit 1400 detects the address of the line signal obtained by imaging the finger based on the position of the signal pulse. As shown in FIG. 10C, by arranging the white spots on the N line, it is possible to secure a large shift amount between the white spots adjacent in the vertical direction. It becomes easier to detect the address.

  Further, as shown in FIG. 10D, the pattern 1200 includes a light reflection portion 1200f of a white block area having a height substantially equal to the length of one side of the pixel of the line sensor 201 and a black block area (in the illustrated example, a hatched portion). ) May be applied alternately (checkered pattern) for each line. In this case, the address detection unit 1400 detects the address of the line signal obtained by imaging the finger by counting the number of times that the light reflection unit 1200f and the light absorption unit 1200g, which are separately painted, are switched.

However, the pattern 1200 shown in FIGS. 10A to 10D is merely an example, and may be a pattern that can detect an address.
Further, the movement amount detecting means for the mounting table 801 with respect to the line sensor 201 is not limited to the pattern as described above. That is, the amount of movement of the mounting table 801 relative to the line sensor 201 may be detected using a means for detecting the amount of movement such as an encoder. In short, the detection unit may be configured to be able to detect the amount of movement of the mounting table 801 relative to the line sensor 201.

<Embodiment 3>
Embodiment 3 of the biometric information acquisition apparatus, biometric authentication apparatus, and electronic apparatus according to the present invention will be described with reference to FIGS. In addition, description of the part which overlaps with the said Embodiment 1, 2 is abbreviate | omitted, and a different part is demonstrated in detail.

  The biometric information acquisition unit 22 of the present embodiment has a configuration substantially similar to that of the biometric information acquisition apparatus 12 of the second embodiment, but as illustrated in FIG. It is configured to control.

  Specifically, the biological information acquisition unit 22 has a pattern 1200 having a light amount adjustment marker 1200h as shown in FIG. The light amount adjustment marker 1200h is, for example, a gray vertically long block region, and is formed in front of the address code and the light reflecting portion so that the initial light amount of the light source 100 can be adjusted.

  When the pattern 1200 having the light amount adjustment marker 1200h is moved through the placement unit 803, the light amount adjustment marker 1200h is imaged by the imaging unit 200, and then the position is changed, like the address code and the light reflection unit of the second embodiment. Information is extracted by the information extraction unit 1300.

  The position information extraction unit 1300 supplies a signal obtained by imaging the light amount adjustment marker 1200h to the address detection unit 1400 and the light amount adjustment marker detection unit 1500. At this time, since the light amount adjustment marker 1200h has a vertically long block shape with the same width, a continuous long signal pulse different from the address code and the light reflection unit described above is supplied to the address detection unit 1400 and the light amount adjustment marker detection unit 1500. . Thereby, the address detection unit 1400 recognizes that the supplied signal is not a signal for detecting an address, and conversely, the light amount adjustment marker detection unit 1500 recognizes that the signal is a light amount adjustment signal. However, since the light amount adjustment marker 1200h is gray, the light amount adjustment marker detection unit 1500 may recognize a light amount adjustment signal when a signal indicating a gray level is continuously supplied.

  The light quantity adjustment marker detection unit 1500 supplies a signal obtained by imaging the supplied light quantity adjustment marker 1200h to the control unit 300. The control unit 300 derives the relationship between the signal level of the signal obtained by imaging in advance and the light amount of the light source 100, and the signal level of the signal obtained by imaging from the relationship is the optimum signal level of the light source 100. It is set to calculate the amount of light. As a result, when the signal obtained by imaging the light amount adjustment marker 1200h is supplied, the control unit 300 calculates the initial light amount of the light source 100 so that the signal has an optimal signal level, and the initial light amount is calculated as the initial light amount. The light source 100 is controlled. The imaging unit 200 captures an image of the finger with the initial light amount of the light source 100 and reads out a signal obtained by imaging the finger and a signal obtained by imaging the address code and the light reflecting unit.

  The position information extraction unit 1300 extracts the signal obtained by imaging the address code and the light reflection unit from the signal obtained by imaging the read finger, the address code, and the signal obtained by imaging the light reflection unit, and addresses It supplies to the detection part 1400 and the light quantity adjustment marker detection part 1500. Since the light quantity adjustment marker detection unit 1500 is supplied with a signal different from the signal obtained by imaging the light quantity adjustment marker 1200h, the light quantity adjustment marker detection unit 1500 recognizes that the signal is not a light quantity adjustment signal. Recognize that

  The address detection unit 1400 detects an address based on the supplied address code and a signal obtained by imaging the light reflection unit, and supplies a signal indicating the address to the control unit 300.

A line signal obtained by imaging the finger is supplied to the line memory 600 and the control unit 300 via the processing unit 500.
The controller 300 calculates the signal level of the line signal obtained by imaging the finger. Then, based on the signal level, the control unit 300 calculates the light amount of the light source 100 so that a line signal obtained by imaging a finger at the next address has an optimal signal level. The control unit 300 instructs the imaging unit 200 to perform imaging at the next address position while controlling the light source 100 so as to obtain the calculated light amount, and causes the A / D converter 400 to supply a signal obtained by imaging.

The control unit 300 further supplies a signal indicating an address to the processing unit 500. On the other hand, the line memory 600 supplies a line signal obtained by imaging the accumulated finger to the processing unit 500.
The processing unit 500 associates a signal indicating the supplied address with a line signal obtained by imaging a finger and supplies the associated signal to the frame memory 700.

  The biometric information acquisition unit 22 according to the present embodiment forms a desired composite image while repeatedly controlling so that a line signal obtained by imaging a finger at the next address has an optimal signal level. That is, since the light source 100 is controlled so as to have an optimum light amount at the time of imaging at the next address position, the light amount of light irradiated on the finger due to a change in external light, a change in the moving speed of the mounting table 801, or the like. Can respond to changes. Incidentally, FIG. 15 shows a signal obtained by imaging the pattern 1200 and the finger by the imaging unit 200 while controlling the light amount of the light source 100.

  In the first to third embodiments, a finger is used as the subject, but a different part of the body may be used.

  The embodiments of the biometric information acquisition apparatus, the biometric authentication apparatus, and the electronic device according to the present invention have been described above, but various modifications can be made without departing from the scope of the present invention.

It is a block diagram which shows the structure of the biometrics apparatus which concerns on Embodiment 1 of this invention. It is a front view which shows roughly the biometric information acquisition part which concerns on Embodiment 1 of this invention. It is a front view which shows a mounting base schematically. It is a rear view which shows a mounting base schematically. It is a bottom view which shows a mounting base schematically. (a) is a front view which shows roughly the storage member which stored the light source, the imaging part, etc. FIG. (B) is the elements on larger scale which show a line sensor roughly. It is a front view which shows a different mounting base schematically. It is a front view which shows roughly the biometric information acquisition part which concerns on Embodiment 2 of this invention. It is a rear view which shows a different mounting base schematically. (A)-(d) is a front view which shows a pattern roughly. It is a figure which shows the signal which shows the read positional information, and the line signal obtained by imaging a finger | toe. It is a block diagram which shows roughly the structure of the biometrics apparatus which concerns on Embodiment 2 of this invention. It is a block diagram which shows roughly the structure of the biometrics apparatus which concerns on Embodiment 3 of this invention. It is a front view which shows roughly the pattern in which the light quantity adjustment pattern was formed. It is a figure which shows the signal obtained by imaging, controlling the light quantity of a light source.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Biometric apparatus 2 Biometric information acquisition part 12 Biometric information acquisition part 22 Biometric information acquisition part 100 Light source 200 Imaging part 201 Line sensor PX Pixel 800 Moving means 801 Mounting stand 802 Guide member 1000 Return means 1200 Pattern

Claims (8)

A biological information acquisition apparatus for imaging a subject to acquire biological information,
An imaging unit having one or more pixel columns, and a mounting table on which the subject is mounted,
The biological information acquisition apparatus according to claim 1, wherein the mounting table is configured to be movable in a direction that intersects an arrangement direction of a plurality of pixels included in the pixel column on the pixel column. A light source for irradiating the subject with light;
The biological information acquiring apparatus according to claim 1, wherein the mounting table is made of a member that is transparent to the light emitted from the light source to the subject, and moves along the guide member.   The biological information acquisition apparatus according to claim 1, further comprising return means for returning the mounting table to the original position.   The biological information acquisition apparatus according to claim 1, further comprising a detecting unit that detects a movement amount of the mounting table with respect to the pixel column.   The biological information acquisition apparatus according to claim 4, wherein a regular pattern is formed on the pixel column for detecting the amount of movement of the mounting table with respect to the pixel column as the detection unit.   The biological information acquisition apparatus according to claim 2, further comprising a control unit that controls a light amount of the light source. A biological information acquisition unit that images a subject and acquires biological information;
A biometric authentication device comprising: an authentication unit that compares and authenticates biometric information acquired by the biometric information acquisition unit and biometric information registered in advance;
The biological information acquisition unit includes an imaging unit having one or more pixel columns, and a mounting table on which the subject is mounted,
The biometric authentication apparatus in which the mounting table is configured to be movable in a direction intersecting with an arrangement direction of a plurality of pixels included in the pixel column on the pixel column.   An electronic device comprising the biometric authentication device according to claim 7.

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